Schools across the nation will be filled with excited children dressed in their best fancy dress in the ultimate homage to some of the world's greatest literary creations.
With playgrounds brimming with Willy Wonkas and Cheshire Cats, and more wizards and witches than you could wave a wand at, schools across England, Wales and Scotland are all set to go above and beyond for this year's 20th anniversary celebrations.
World Book Day has been a staple in the school calendar for two decades and has seen children all over the country step into the worlds of some of their favourite books.
Over the years, the event has grown and grown with schools going above and beyond to celebrate some of our best-loved characters.
This year is no exception with plenty of games and activities for you to get involved in.
A special design competition is well under way with a tempting first prize package of £900 worth of National Book Tokens up for grabs.
Teachers can download a template from the World Book Day website and hand them out to students who will be tasked to "Doodle Something Booky".
The competition has three categories, up to eight years, nine to twelve and 13-16 years, and doesn't close until Friday April 14.
The fun is set to go on for months, with plenty of events and activities in libraries and museums across the country, including the Supercalifragilistic Mary Poppins Walking Tour.
Here at QA Education we would love to join in the fun so please send in your World Book Day pictures to firstname.lastname@example.org for us to put on our website.